Wheel chock



Oct. 20, 1931. A c SNYDER 1,828,579

WHEEL CHOCK Filed Aug. l5 193 gwva'ntov Patented @ch 2t @5331 CLIFFOB ID L. SNYDER, 015 DETROIT, MECHIGAN, ASSIG-NOR To EVANS PRODUCTS COM- ]?ANY, 013 DETROIT, MICHIGAN WHEEL CHOCK Application. filed. August 15, 1930. Serial No. 475,601.

This invention relates to certain new and useful improvements in wheel chocks.

The primary object of the invention is to provide a wheel chock of the type having a grooved face for engagement with thetire of a vehicle and has particular reference to the anchoring of the wheel chock or block in posi- I tion, the bottom face of the block being transversely groovedto facilitate the positioning of the block on an anchored rail or bar and being capable of movement longitudinally of the bar for the positioning of the block relative to the vehicle wheel tire combined with devices for anchoring the block in position.

A further object of the invention is to pro vide a chock block of the foregoing character in which the bar or rail with which the chock block is associated ismounted upon acar floor or other support, with the chock block retained in position on thebar by a wedge or similar device and restrained from 'HlOlVG- ment, eliminating the usual practice of nailing chock blocks to the floor of the car or support.

With the above and other objects in view that will-become apparent as the natureof the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings Figure 1 is a perspective view of a chock block constructed in accordance with the present invention showing a transverse groove of dovetail formation formed in the bottom face of the chock block;

Figure 2 is a perspective view showing the chock block in Figure 1 anchored in position upon the bar or rail with the cross-sectional figuration of the bar correspond to transverse grooves in the chock block, the latter being transversely slidable to position on the bar and retained by a wedge piece or key;

Figure 3 is a perspective view of a chock lock showing another form of bottom groove having opposed vertical and inclined side walls;

Figure at is aperspective view showing the chock block illustratedin Figure 3 anchored upon a bar similar in form to the block groove with a wedge anchor combined therewith;

Figure 5 is a perspective view of a chock block with the block groove of a rectangular form; and

Figure 6 is a perspective View showing the block illustrated in Figure 5, mounted upon a bar having a side groove to receive a wedge piece or key. An important feature embodied in this invention desired in the provision of a chock block and mounting therefor; which would einninate the usual practice of nailing or s milarly securing the chock block to the iioor of a freight car or other support and several forms of devices for accomplishing this object are disclosed herein. In the form of the invention shown in Figures 1 and 2, the chock block A is provided with the usual curved wheel tire engaging face 10 and a hat bottom face 11. A transverse groove of dovetail formation is formed in the bottom face 11 of the chock block and has a straight upper face 12 and inclined sides 13 tapering toward the restricted bottom opening 14. .lhe chock block A is adapted to be positioned upon the rail 15 shown in Figure 2 of trapezoidal formation in cross-section, similar to the dove-tail shaped groove in the bottom face of the chockblock with one of the inclined sides 15a of the rail 15 engaged with an inclined side 13 of the block groove. T he rail 15 may be anchored upon the fioor of a shipping conveyance or other support and the chock block moved thereon from one end of the rail and be prevented from an escape. Lateral movement of the chock block A upon the rail 15 permits correct positioning thereof relative to a vehicle wheel tire and when so located, the chock block is anchored in position by a wedge piece or key 16 driven into the block groove between a side wall 18 thereof and an adjacent side 15a of the rail as shown in Figure 2. As stated, the

rail 15 may be anchored in position and be of a iength to permit-a wide range of adjustment-for the chock block which may be retained in its adjustedposition by the wedge piece or key 16. It will be seen that the chock block is securely anchored in positionwithout the necessity of driving nails, spikes or similar fastening devices through the chock block in the car floor or support as this latter practice seriously damages the chock blocks and prevents their re-use, it being only necessary to remove the wedge piece or casing 16 and at which time the chock block A may be easily disengaged from the rail 15.

In the form of the invention shown in Figures 3 and 4, the chock block B with the curved wheel tire engaging face 10 and flat bottom face 11, is provided with a transversely extending bottom groove having a straight upper wall 17, a vertical side wall 18 and an-inclined opposed side wall 19. The rail 20, shown in Figure 4, has a vertical side edge 20a to be engaged with the vertical side 18 of the block groove and an inclined side 20?) engaged with the inclined side 19 of the block B. The block B may be positioned upon the rail 20 at any point in the length thereof and retained in proper position by the wedge piece or key 21 having opposite inclined sides mating with the inclined sides 20b of the rail 20 at the inclined side 19 of the block groove.

As shown in Figures 5 and 6, the chock block C having curved wheel tire engaging face 10 and flat bottom face 11 is provided in the bottom with a transversely extending groove of rectangular formation having a straight upper wall 22 and parallel side walls 23. The rail 24lis of rectangular formation in cross-section and of a cross-sectional area substantially corresponding to the area of the groove in the block C, the rail 24 having a side longitudinally extending groove 25 into which a wedge piece or key in the form of a nail or spike 26 is driven, with a part of the key 26 indenting the adjacent side wall 23 of the block groove, to form an interlocking connection between the chock block and rail 24.

From the above detailed description of the invention, it is believed that the construction and. use thereof will at once be apparent, it being noted that the anchor rail is in the form of a steel bar which may be positioned transversely of a shipping car floor or other support and that chock blocks are anchored to the rail by the use of keys or wedges to be securely held against movement or displacement in transit and that the usual: pra ctice of nailing or similarly securing the chock block to a car floor or support is eliminated. An important feature of the invention consists of first anchoring the rail in positioning and thereafter moving the chock block over the rail to the desired location for wheel tire-engagement and then securing the block against movement.

While there are herein shown and described thepreferred embodiments of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

I claim 1. The combination with an anchored rail, of a chock block having a bottom groove received on the rail. and means cooperating with the rail and block to anchor the block on the rail.

2. The combination with an anchored rail, of a chock block having a bottom groove received on the rail, and means interposed be tween the rail and block to anchor the block on the rail.

3. The combination with an anchored rail, of a chock block having a bottom groove received on the rail, and a wedge piece inserted between a side of the groove and rail to anchor the block on the rail.

4. The combination with an anchored rail. of a chock block ha ing a bottom groove re ceived on the rail, and movable thereover, and means for anchoring the block on the rail including a wedge piece inserted in the block groove to engage a side edge of the rail.

5. The combination with. a rail having in clined sides, of a check block having a transversely extending dovetailed-shaped groove in its bottom side received on the rail and slidably adjustable thereon, the width of the groove being greater than the width of the rail, and a wedge piece inserted between a groove wall and the rail to anchor the block on the rail.

6. The combination with a rail, of a chock block having a bottom groove therein of a width greater than the width of the rail adapted for mounting on the rail, and a wedge piece inserted between a. wall of the groove and the rail for anchoring the choclcblock J on the rail.

7. The combination with a rail of a check block having a bottom groove therein of a width greater than the width of the rail adapted for mounting on the rail, a wedge piece inserted between a wall of the groove and the rail for anchoring the check block on the rail, and at least one of the groove walls and a rail side being inclined in corresponding directions.

8. The combination with a rail, of a chock block having a transverse groove in its bottom wall adapted for mounting on the rail, said rail havinga longitudinal groove therein on one side and a key driven into the rail groove indenting the adjacent wall of the block to anchor the block on the rail.

In testimony whereof I aiiix my signature.

CLIFFORD L. SNYDER. 

